Year	per 1,000 uninfected population ages 15-49
1990	0.4
1991	0.6
1992	0.8
1993	1.1
1994	1.4
1995	1.7
1996	1.9
1997	2.1
1998	2.2
1999	2.2
2000	2.2
2001	2.1
2002	2.1
2003	2
2004	1.9
2005	1.8
2006	1.8
2007	1.7
2008	1.6
2009	1.6
2010	1.5
2011	1.5
2012	1.5
2013	1.4
2014	1.4
2015	1.4
2016	1.4
2017	1.3
2018	1.3